Have you ever actually used a scope with "correction tension springs?"

Of all the systems on commercial Dobs, it's my favorite, it mimicks the large altitude bearings of the premium Dobs. My 14 year old GSO Dob uses the system.. I use it at magnifications up to 822x with good results..

Nothing in my house can ever claim to gather no dust. It might be a disadvantage of the "all windows open"tropical environment is the amount of dust I get inside my home. I store My Z114 reflector stored with its cap in a plastic bag in a closet in the 2nd floor, and laid horizontal, still collects dust!!

<p class="citation">QuoteOrion XT Classics are out becaise I don't like their spring mechanism.

Humm..

Have you ever actually used a scope with "correction tension springs?"

Of all the systems on commercial Dobs, it's my favorite, it mimicks the large altitude bearings of the premium Dobs. My 14 year old GSO Dob uses the system.. I use it at magnifications up to 822x with good results..

Jon[/quote]

No, I haven't. I've only used Zhumell altitude bearings on a mini-dob (Z114).

<p class="citation">QuoteOrion XT Classics are out becaise I don't like their spring mechanism.

Humm..

Have you ever actually used a scope with "correction tension springs?"

Of all the systems on commercial Dobs, it's my favorite, it mimicks the large altitude bearings of the premium Dobs. My 14 year old GSO Dob uses the system.. I use it at magnifications up to 822x with good results..

Jon

No, I haven't. I've only used Zhumell altitude bearings on a mini-dob (Z114).

I have, and I found them to be horrible!Another vote for the Z8 from me. I had one of these, and it was almost great right out of the box. With all of these scopes, you'll need to replace the primary springs. As mentioned, the knob is no big deal, and you can build your own dustcap.